If you give them the right conditions, African Violets will bloom all year round. I have a goldfish plant that never stops blooming for long. Spider plant would be nice for small flowers and an easy care houseplant. Maybe try a Peace lily. Many flowering plants take a rest between bloom times. I'm hoping someone will give a few more suggestions. Good luck,

Jasmine sambac (maid of orleans) blooms all year round inside the house. It maybe more intermittent in the winter. However, the flowers only last one day.

Gardenias (if one can get them to survive and bloom inside in the first place) can bloom for quite a while. The flowers last long too. Mine blooms all year except the hottest part of the summer.

If you have enough light to give, you can try hibiscus. They have gorgeous flowers but unfortunately only last a day or two as well.

Note about the jasmine and gardenia- there are different types and I don't think all are prolific bloomers year round. The J. Sambac Maid of Orleans I know can flower year round indoors. There are other Sambacs that won't really flower in the winters.
I'm not too familiar with all types of gardenias but mine is a 'fortuniana' and it blooms most of the year other than peak summers. I don't know if all varieties are this way.

Those are the only ones I grow and know about- wish I could give some better options.

As Jen said, African Violets are good, easy care, year round blooming houseplants. They come in many colors and leaf types. The other plus is that they don't take up very much space. You may get carried away with buying a lot of these for that very reason!

I have a purple Oxalis, but it only blooms for me in the spring and early summer. I'm sure some species or varieties would bloom year round if you give them the light they need. If I had the space, I'd set mine under lights now to see what happens!

You would love the Jasminum Sambac 'Maid of Orleans'. Beautiful, fragrant white blooms that last 24 hours. I'm going to stick my plant under some lights and wait for it to bless me with those intoxicating blooms!

If you'd like a variety of blooming plants, don't forget about Phalaenopsis orchids, especially 'Kaleidoscope'.

Oh! Begonias? Many varieties flower and do so through out the year, indoors- and they last a long time too. They don't have the most gorgeous flowers or anything but and the over-all effect is very pretty and they are easy to take care of!

Most people grow indoor plants for the lush foliage, too. Try tempting her with interesting colors, textures, and shapes.

My bromiliad has been blooming since February, and is only now showing signs of giving up! I have a hoya that has bloomed for about 9 months, as well. I like both of them for their foliage, though, and wouldn't care much if they didn't bloom.